agenttesla | 94b82f0655f1a9554b3cea8e31ac76ffd4cbcb32ebee539fb7706d4ced615fa7

General

Target

Salary.receipt.exe
Size

507KB
MD5

2ed6761b5c7c9bb55e0d800c64398192
SHA1

28832ad3b22e7a6bce3d16e11aa87654f34acef5
SHA256

94b82f0655f1a9554b3cea8e31ac76ffd4cbcb32ebee539fb7706d4ced615fa7
SHA512

71a56a17e0a45f7a57a4bba731e0f9b764e74d3cd76ad0ffea82d5f77987446146b2c07380c86d65a9281ef2beb706f81346dd09daf080eb962e0cffcbdd4a7c

Score

10^/10

agenttesla coreentity keylogger persistence rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.emjayes.com
Port:
587
Username:
alert@emjayes.com
Password:
covid2019$

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral2/memory/636-14-0x0000000004890000-0x0000000004893000-memory.dmp	coreentity

AgentTesla Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4044-17-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral2/memory/4044-18-0x000000000044C85E-mapping.dmp	family_agenttesla

rezer0 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral2/memory/636-15-0x000000000A900000-0x000000000A953000-memory.dmp	rezer0

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Salary.receipt.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\NYjJTsx = "C:\\Users\\Admin\\AppData\\Roaming\\NYjJTsx\\NYjJTsx.exe"	Salary.receipt.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Salary.receipt.exe

description pid process target process

PID 636 set thread context of 4044 636 Salary.receipt.exe Salary.receipt.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Salary.receipt.exe

pid process

4044 Salary.receipt.exe
4044 Salary.receipt.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Salary.receipt.exeSalary.receipt.exe

description pid process

Token: SeDebugPrivilege 636 Salary.receipt.exe
Token: SeDebugPrivilege 4044 Salary.receipt.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

Salary.receipt.exeSalary.receipt.exe

pid process

636 Salary.receipt.exe
636 Salary.receipt.exe
4044 Salary.receipt.exe

description	pid	process	target process
PID 636 set thread context of 4044	636	Salary.receipt.exe	Salary.receipt.exe

pid	process
4044	Salary.receipt.exe
4044	Salary.receipt.exe

description	pid	process
Token: SeDebugPrivilege	636	Salary.receipt.exe
Token: SeDebugPrivilege	4044	Salary.receipt.exe

pid	process
636	Salary.receipt.exe
636	Salary.receipt.exe
4044	Salary.receipt.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Salary.receipt.exeSalary.receipt.exe

description	pid	process	target process
PID 636 wrote to memory of 4044	636	Salary.receipt.exe	Salary.receipt.exe
PID 636 wrote to memory of 4044	636	Salary.receipt.exe	Salary.receipt.exe
PID 636 wrote to memory of 4044	636	Salary.receipt.exe	Salary.receipt.exe
PID 636 wrote to memory of 4044	636	Salary.receipt.exe	Salary.receipt.exe
PID 636 wrote to memory of 4044	636	Salary.receipt.exe	Salary.receipt.exe
PID 636 wrote to memory of 4044	636	Salary.receipt.exe	Salary.receipt.exe
PID 636 wrote to memory of 4044	636	Salary.receipt.exe	Salary.receipt.exe
PID 636 wrote to memory of 4044	636	Salary.receipt.exe	Salary.receipt.exe
PID 4044 wrote to memory of 896	4044	Salary.receipt.exe	netsh.exe
PID 4044 wrote to memory of 896	4044	Salary.receipt.exe	netsh.exe
PID 4044 wrote to memory of 896	4044	Salary.receipt.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\Salary.receipt.exe
"C:\Users\Admin\AppData\Local\Temp\Salary.receipt.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:636

C:\Users\Admin\AppData\Local\Temp\Salary.receipt.exe
"{path}"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4044

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:896

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Salary.receipt.exe.log
MD5
b4f7a6a57cb46d94b72410eb6a6d45a9

SHA1
69f3596ffa027202d391444b769ceea0ae14c5f7

SHA256
23994ebe221a48ea16ebad51ae0d4b47ccd415ae10581f9405e588d4f6c2523b

SHA512
be6da516e54c3a5b33ac2603137a2f8cf8445ff5961dd266faedf3627bae8979953d7ef305538df0151c609917a5b99bf5d023bdd32de50fd5c723950f90db5c

Download Submit
memory/636-15-0x000000000A900000-0x000000000A953000-memory.dmp

Filesize
332KB

Download
memory/636-1-0x00000000005A0000-0x00000000005A1000-memory.dmp

Filesize
4KB

Download
memory/636-4-0x0000000007390000-0x0000000007391000-memory.dmp

Filesize
4KB

Download
memory/636-5-0x0000000007330000-0x0000000007331000-memory.dmp

Filesize
4KB

Download
memory/636-14-0x0000000004890000-0x0000000004893000-memory.dmp

Filesize
12KB

Download
memory/636-0-0x0000000073E00000-0x00000000744EE000-memory.dmp

Filesize
6.9MB

Download
memory/636-16-0x000000000AA00000-0x000000000AA01000-memory.dmp

Filesize
4KB

Download
memory/636-3-0x00000000077F0000-0x00000000077F1000-memory.dmp

Filesize
4KB

Download
memory/896-27-0x0000000000000000-mapping.dmp

Download
memory/4044-17-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/4044-20-0x0000000073E00000-0x00000000744EE000-memory.dmp

Filesize
6.9MB

Download
memory/4044-25-0x00000000054B0000-0x00000000054B1000-memory.dmp

Filesize
4KB

Download
memory/4044-26-0x0000000005670000-0x0000000005671000-memory.dmp

Filesize
4KB

Download
memory/4044-18-0x000000000044C85E-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads